National Register

Labeled cutaway diagram of the 1926 water reclamation plant showing bar screens, three aeration tanks, filters, and a storage tank

The 1926 Plant That Turned Sewage Into the South Rim's Water

A railroad-built plant reclaimed wastewater for a rim with no natural water supply, ran trouble-free for 46 years, and is now a fenced historic district.

Cutaway illustration of the Trans-Canyon Telephone Line's galvanized pipe poles descending the canyon wall with a mule train hauling repair gear alongside the copper wire route

The Trans-Canyon Telephone Line: mule-maintained since 1935

A 1922 tree-strung wire became a CCC-built copper line on 592 pipe poles, rescued hikers for decades, and is now a mapped aircraft hazard.